1 ; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s --check-prefix PTX
2 ; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s --check-prefix PTX
3 ; RUN: opt -mtriple=nvptx-- < %s -S -infer-address-spaces | FileCheck %s --check-prefix IR
4 ; RUN: opt -mtriple=nvptx64-- < %s -S -infer-address-spaces | FileCheck %s --check-prefix IR
6 @array = internal addrspace(3) global [10 x float] zeroinitializer, align 4
7 @scalar = internal addrspace(3) global float 0.000000e+00, align 4
9 ; Verifies nvptx-favor-non-generic correctly optimizes generic address space
10 ; usage to non-generic address space usage for the patterns we claim to handle:
15 ; gep and cast can be an instruction or a constant expression. This function
16 ; tries all possible combinations.
17 define void @ld_st_shared_f32(i32 %i, float %v) {
18 ; IR-LABEL: @ld_st_shared_f32
19 ; IR-NOT: addrspacecast
20 ; PTX-LABEL: ld_st_shared_f32(
22 %1 = load float, float* addrspacecast (float addrspace(3)* @scalar to float*), align 4
23 call void @use(float %1)
24 ; PTX: ld.shared.f32 %f{{[0-9]+}}, [scalar];
26 store float %v, float* addrspacecast (float addrspace(3)* @scalar to float*), align 4
27 ; PTX: st.shared.f32 [scalar], %f{{[0-9]+}};
28 ; use syncthreads to disable optimizations across components
29 call void @llvm.nvvm.barrier0()
33 %2 = addrspacecast float addrspace(3)* @scalar to float*
34 %3 = load float, float* %2, align 4
35 call void @use(float %3)
36 ; PTX: ld.shared.f32 %f{{[0-9]+}}, [scalar];
38 store float %v, float* %2, align 4
39 ; PTX: st.shared.f32 [scalar], %f{{[0-9]+}};
40 call void @llvm.nvvm.barrier0()
44 %4 = load float, float* getelementptr inbounds ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5), align 4
45 call void @use(float %4)
46 ; PTX: ld.shared.f32 %f{{[0-9]+}}, [array+20];
48 store float %v, float* getelementptr inbounds ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5), align 4
49 ; PTX: st.shared.f32 [array+20], %f{{[0-9]+}};
50 call void @llvm.nvvm.barrier0()
54 %5 = getelementptr inbounds [10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5
55 %6 = load float, float* %5, align 4
56 call void @use(float %6)
57 ; PTX: ld.shared.f32 %f{{[0-9]+}}, [array+20];
59 store float %v, float* %5, align 4
60 ; PTX: st.shared.f32 [array+20], %f{{[0-9]+}};
61 call void @llvm.nvvm.barrier0()
65 %7 = addrspacecast [10 x float] addrspace(3)* @array to [10 x float]*
66 %8 = getelementptr inbounds [10 x float], [10 x float]* %7, i32 0, i32 %i
67 %9 = load float, float* %8, align 4
68 call void @use(float %9)
69 ; PTX: ld.shared.f32 %f{{[0-9]+}}, [%{{(r|rl|rd)[0-9]+}}];
71 store float %v, float* %8, align 4
72 ; PTX: st.shared.f32 [%{{(r|rl|rd)[0-9]+}}], %f{{[0-9]+}};
73 call void @llvm.nvvm.barrier0()
79 ; When hoisting an addrspacecast between different pointer types, replace the
80 ; addrspacecast with a bitcast.
81 define i32 @ld_int_from_float() {
82 ; IR-LABEL: @ld_int_from_float
83 ; IR: load i32, i32 addrspace(3)* bitcast (float addrspace(3)* @scalar to i32 addrspace(3)*)
84 ; PTX-LABEL: ld_int_from_float(
85 ; PTX: ld.shared.u{{(32|64)}}
86 %1 = load i32, i32* addrspacecast(float addrspace(3)* @scalar to i32*), align 4
90 define i32 @ld_int_from_global_float(float addrspace(1)* %input, i32 %i, i32 %j) {
91 ; IR-LABEL: @ld_int_from_global_float(
92 ; PTX-LABEL: ld_int_from_global_float(
93 %1 = addrspacecast float addrspace(1)* %input to float*
94 %2 = getelementptr float, float* %1, i32 %i
95 ; IR-NEXT: getelementptr float, float addrspace(1)* %input, i32 %i
96 %3 = getelementptr float, float* %2, i32 %j
97 ; IR-NEXT: getelementptr float, float addrspace(1)* {{%[^,]+}}, i32 %j
98 %4 = bitcast float* %3 to i32*
99 ; IR-NEXT: bitcast float addrspace(1)* {{%[^ ]+}} to i32 addrspace(1)*
100 %5 = load i32, i32* %4
101 ; IR-NEXT: load i32, i32 addrspace(1)* {{%.+}}
102 ; PTX-LABEL: ld.global
106 define void @nested_const_expr() {
107 ; PTX-LABEL: nested_const_expr(
108 ; store 1 to bitcast(gep(addrspacecast(array), 0, 1))
109 store i32 1, i32* bitcast (float* getelementptr ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i64 0, i64 1) to i32*), align 4
110 ; PTX: mov.u32 %r1, 1;
111 ; PTX-NEXT: st.shared.u32 [array+4], %r1;
115 define void @rauw(float addrspace(1)* %input) {
116 %generic_input = addrspacecast float addrspace(1)* %input to float*
117 %addr = getelementptr float, float* %generic_input, i64 10
118 %v = load float, float* %addr
119 store float %v, float* %addr
122 ; IR-NEXT: %addr = getelementptr float, float addrspace(1)* %input, i64 10
123 ; IR-NEXT: %v = load float, float addrspace(1)* %addr
124 ; IR-NEXT: store float %v, float addrspace(1)* %addr
128 define void @loop() {
131 %p = addrspacecast [10 x float] addrspace(3)* @array to float*
132 %end = getelementptr float, float* %p, i64 10
136 %i = phi float* [ %p, %entry ], [ %i2, %loop ]
137 ; IR: phi float addrspace(3)* [ %p, %entry ], [ %i2, %loop ]
138 %v = load float, float* %i
139 ; IR: %v = load float, float addrspace(3)* %i
140 call void @use(float %v)
141 %i2 = getelementptr float, float* %i, i64 1
142 ; IR: %i2 = getelementptr float, float addrspace(3)* %i, i64 1
143 %exit_cond = icmp eq float* %i2, %end
144 br i1 %exit_cond, label %exit, label %loop
150 @generic_end = external global float*
152 define void @loop_with_generic_bound() {
153 ; IR-LABEL: @loop_with_generic_bound(
155 %p = addrspacecast [10 x float] addrspace(3)* @array to float*
156 %end = load float*, float** @generic_end
160 %i = phi float* [ %p, %entry ], [ %i2, %loop ]
161 ; IR: phi float addrspace(3)* [ %p, %entry ], [ %i2, %loop ]
162 %v = load float, float* %i
163 ; IR: %v = load float, float addrspace(3)* %i
164 call void @use(float %v)
165 %i2 = getelementptr float, float* %i, i64 1
166 ; IR: %i2 = getelementptr float, float addrspace(3)* %i, i64 1
167 %exit_cond = icmp eq float* %i2, %end
168 ; IR: addrspacecast float addrspace(3)* %i2 to float*
169 ; IR: icmp eq float* %{{[0-9]+}}, %end
170 br i1 %exit_cond, label %exit, label %loop
176 declare void @llvm.nvvm.barrier0() #3
178 declare void @use(float)
180 attributes #3 = { noduplicate nounwind }